EP0212466B1 - Method for forming filter element and forming apparatus therefor - Google Patents

Method for forming filter element and forming apparatus therefor Download PDF

Info

Publication number
EP0212466B1
EP0212466B1 EP86110916A EP86110916A EP0212466B1 EP 0212466 B1 EP0212466 B1 EP 0212466B1 EP 86110916 A EP86110916 A EP 86110916A EP 86110916 A EP86110916 A EP 86110916A EP 0212466 B1 EP0212466 B1 EP 0212466B1
Authority
EP
European Patent Office
Prior art keywords
sheet
rounding
sector shaped
filter element
forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86110916A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0212466A3 (en
EP0212466A2 (en
Inventor
Takatoshi Iwase
Kouhei Hakamada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OFFERTA DI LICENZA AL PUBBLICO
Original Assignee
NipponDenso Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Publication of EP0212466A2 publication Critical patent/EP0212466A2/en
Publication of EP0212466A3 publication Critical patent/EP0212466A3/en
Application granted granted Critical
Publication of EP0212466B1 publication Critical patent/EP0212466B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0082—Making filter elements, e.g. pleated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S493/00—Manufacturing container or tube from paper; or other manufacturing from a sheet or web
    • Y10S493/941—Filter

Definitions

  • the invention relates to a method and an apparatus for forming a filter element according to the preamble of claim 1 and claim 3, respectively.
  • US-A-2,984,160 discloses an appratus for forming a filter element from a sector shaped sheet which is prebent by hand in such a way that a plurality of wavy portions are provided.
  • This prebent sheet is laid down on a working table of the apparatus whereupon flexible holding strips are inserted into the valleys of the wavy portions. These strips are rounded and simultaneously the pitch between the strips is reduced by shifting an handle manually so that the sheet is rounded and reduced in radial length simultaneously.
  • the teeth of a rectifying device are inserted into the valleys of the sheet which rectifying device serves also as a retaining means during the joining of two such sections of a sheet to receive a circular filter element.
  • Fig. 1 is a side view showing the apparatus of the present invention schematically.
  • Fig. 2 is a perspective view of the sheet which is prepared in the apparatus shown in Fig. 1.
  • Fig. 3 is a perspective view of the sheet, the shape of which is formed by the apparatus shown in Fig. 1.
  • Fig. 4 is a schematic view showing the relationship between the pantograph and the cam plate.
  • Fig. 5 is a sectional view showing the cross-sectional shape of holding wedges and explaining the relationship between the holding wedges and the wavy portions of the sheet.
  • Fig. 6 is a top view showing the main structure of the rounding means.
  • Fig. 7 is a top view showing the main structure of the forming means.
  • Fig. 2 shows a sector-shaped sheet 2 of non-texile cloth, which is used as a filter element of the present invention.
  • This sheet 2 is bent to make a plurality of wavy portions in such a manner that a vertical angle becomes about 90° and that the wavy portions are provided concentrically.
  • This sheet is reduced in its radial length by a reducing step according to the present invention and an element of semicircular shape is made as shown in Fig. 3. After the sheet has become semicircular by rounding, the sheet is then rounded again by another rounding machine (not shown) to receive a circular shape as shown in Fig. 8(c).
  • the apparatus of this invention has a horizontal working table 11 and reducing means X provided under a frame 13 which is arranged such that the frame 13 is parallel with the working table 11.
  • the reducing means X has an elevating frame 15 supported by a rod of a cylinder 14 which is vertically fixed with the frame 13.
  • the elevating frame 15 also supports a rodless cylinder 16 horizontally.
  • the elevating frame 15 supports a shaft 17 and a cam plate 18 which are arranged in parallel with the rodless cylinder 16.
  • the shaft 17 is supported by the elevating frame 15 via a couple of brackets 19 and 20, and sliding pieces 21 are provided on the shaft 17 in such a manner that the sliding pieces 21 can slide along the shaft 17.
  • Each sliding piece 21 has a holding wedge 22 at lower end thereof, and each sliding piece 21 is connected with a common pantograph 23 having an equal pitch between adjacent sliding pieces 21.
  • the leftmost sliding piece 21a is connected with a slider 24 of the rodless cylinder 16. Accordingly, each sliding piece 21 and holding wedge 22 is moved while a predetermined interval is kept between each of them, when the rodless cylinder 16 is moved toward direction C in Fig. 1.
  • the rightmost sliding piece 21b (basic piece) is not moved, but maintains its position until a predetermined timing described as follows. Since each of the pieces 21 is connected with the pantograph 23, the left side pieces move to the right, when the pantograph reduces the interval between adjacent pieces 21. After the pitch between the adjacent holding wedges has become equal to a predetermined pitch P (shown in Fig. 3) of the sheet 2, that is, after the length between a couple of rollers, which is provided at the rightmost end of the pantograph, has become as long as the longest width of the came plate 18, each of the sliding pieces 21 including the rightmost piece 21b starts to move toward C direction. Consequently the right edge 2a of the sheet is prevented from being inserted into the gap between the working table 11 and an auxiliary working table 30, when the sheet 2 is transferred from the working table 11 to the auxiliary working table 30.
  • P shown in Fig. 3
  • the cross-sectional shape of the holding wedge 22 is arched in order to match the wavy portions of the sheet 2, and the width of the holding wedge 22 gradually reduces in the radial direction of the sheet 2. That is, the width of the right side holding wedge 22 is smaller than that of the left side holding wedge 22 as shown in Fig. 5.
  • the pitch of the holding wedges 22 should be the same as the pitch p' of the wavy portions of the sheet 2 (shown in Fig. 2).
  • the pitch p' can be varied according to the variation of the sheet 2.
  • the operation of the reducing means is explained as follows. First, the sector-shaped sheet, which has wavy portions, is set on the working table in such a manner that the center portion of the sheet is on the right in Fig. 1. Then, the elevating frame 15 is moved downwardly (direction A in Fig. 1) by the cylinder 14. The rodless cylinder 16, the shaft 17, the sliding pieces 21 and the holding wedges 22 are also moved downwardly according to the movement of the elevating frame 15, so that the end portions of the holding wedges 22 are inserted into the valley portions of the wavy portions for holding the sheet 2 between the holding wedges 22 and the working table 11, as shown in Fig. 1. Then the rodless cylinder 16 starts moving the slider 24 toward direction C in Fig. 1. The movement of the slider 24 causes the holding wedges 22 to move to the right and also to reduce the radial length of the sheet 2. The movement of the slider 24 also carries the sheet 2 to the predetermined position 2' on the auxiliary working table 30.
  • the rounding member is positioned under the working table 11, as long as the rounding member does not work, and the rounding member is located on the auxiliary working table 30 only when the rounding member operates.
  • the rounding member is provided on the slide base 34, which is slidably mounted on a couple of rails 32 via a slide bearing 33.
  • the rails 32 are provided on the base 31.
  • the auxiliary working table 30 is also mounted on the slide base 34 via a column 35.
  • a cylinder 36 is located vertically on the slide base 34, and a sub-base 37 is fixed to the end portion of the rod of the cylinder 36, so that the sub-base 37 can be elevated vertically. Since a rounding means Y is provided on the sub-base 37, the rounding means Y can be switched in its position between a working position and a housing position by the reciprocating movement (direction G and H) of the cylinder 36.
  • the rounding means Y has a couple of cylinders 38 and 39, which are fixed to the sub-base 37 horizontally.
  • An U-shaped bracket 40 is fixed to the end portion of the lower cylinder 39, and a couple of links 42, at which rollers 41 and 41a are provided, are linked to the end portion of the bracket 40 in such a manner that the link 42 can rotate freely, so that the bracket 40, the link 42 and the pin 43 form an arm 44.
  • a roller 45 is connected rotatably with the end portion of the rod of the upper cylinder 38.
  • a belt 46 extends over these rollers 41, 41a and 45, and both ends of the belt are fastened to the rollers 41 and 41.
  • the operation of the rounding means is explained as follows.
  • the rounding means Y is elevated by the movement of the cylinder 36 in order to change its position to the working position.
  • the cylinder 39 starts to move the rod to the right, so that the rod makes the arm 44 move to the right and causes the link 42 and the roller 41 to rotate toward the direction E.
  • the rotation of the roller 41 lays the belt 46 around the sheet as shown by dotted line in Fig. 6.
  • a limiting plate 47, which limits the central angle of the sheet 2, and a pin 48, which fixes the central position of the sheet 2, are provided on the auxiliary working table 30. Since the rollers 41 travel beyond the position of the limiting plate 47, the sheet 2 is pressed by the belt 46 and is reformed, until the central angle of the sheet 2 becomes as wide as 180°. While the belt 46 is laid around the sheet, the tension force of the belt 46 is controlled by the movement of the cylinder 38, and the tension force of the belt 46 is modified in accordance with the number of the wavy portions of the sheet.
  • the reforming means Z is arranged under the auxiliary working table 30.
  • the reforming means Z as well as the rounding means Y have a vertical cylinder 50, which is fixed on the slide base 34.
  • a sub-base 51 is fixed at the end portion of the rod of the cylinder 50, and a horizontal cylinder 52 is provided on the sub-base 51.
  • a holder 54 is fixed with the end portion of the rod of the cylinder 52 via the bracket 55.
  • the holder 54 comprises three portions, each of which has a plurality of reforming wedges 53a, 53b and 53c.
  • reforming wedges 53a, 53b and 53c are embodied in a way that the pitch between the reforming wedges is matches the pitch of the wavy portions of the sheet which has already been reduced in its radial length.
  • the reforming wedge 53b located at the center position is fixed, the reforming wedges 53a and 53c located at the right side and left side of the central reforming wedge 53b, on the other hand, are linked with the holder 54 in such a manner that both reforming wedges 53a and 53c are pivoted in the direction M in Fig. 7, when the holder 54 is moved.
  • a plurality of semicircular slots 56 which function as the rotating guide of the reforming wedges 53a and 53c, are provided on the auxiliary working table 30.
  • this reforming means Z is described as follows.
  • the reforming wedges 53 are elevated from their housing position toward the underside of the sheet through the slots 56 by the movement of the cylinder 50, so that the top edge of each forming wedge 53 is inserted into the valleys between the wavy portions of the sheet 2.
  • the holding wedges 22 which had maintained the form of the sheet 2, start moving outward for returning to the starting position of the means X for reducing the radial length.
  • the cylinder 52 makes the bracket 55 move toward direction K in Fig. 7 and the movement of the bracket 55 makes the holder 54 rotate clockwise and counterclockwise via the linking member, so that the reforming wedges 53a and 53c are pivoted along the slot 56 toward direction M. Therefore, the shape of the wavy portions of the sheet 2 can be modified to be preferably a circle which is determined by the slots 56.
  • the forming process of the filter element which has been done by manpower, can be carried out automatically. Furthermore, since the reforming wedges are pivoted along with the wavy portions of the sheet during the rounding step, the filter element can be formed till it becomes absolutely circular and the density of the filter element can be made uniform.
  • the method and also the apparatus of the present invention can be used for assembling a filter element, even if the size and the number of the wavy portions of the sheet vary, so that the present invention is very effective.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filtration Of Liquid (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP86110916A 1985-08-12 1986-08-07 Method for forming filter element and forming apparatus therefor Expired - Lifetime EP0212466B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP175654/85 1985-08-12
JP60175654A JPS6237143A (ja) 1985-08-12 1985-08-12 フイルタエレメントの成形方法及び装置

Publications (3)

Publication Number Publication Date
EP0212466A2 EP0212466A2 (en) 1987-03-04
EP0212466A3 EP0212466A3 (en) 1989-03-01
EP0212466B1 true EP0212466B1 (en) 1993-03-17

Family

ID=15999875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110916A Expired - Lifetime EP0212466B1 (en) 1985-08-12 1986-08-07 Method for forming filter element and forming apparatus therefor

Country Status (6)

Country Link
US (1) US4718884A (enrdf_load_stackoverflow)
EP (1) EP0212466B1 (enrdf_load_stackoverflow)
JP (1) JPS6237143A (enrdf_load_stackoverflow)
KR (1) KR900004485B1 (enrdf_load_stackoverflow)
CA (1) CA1267019A (enrdf_load_stackoverflow)
DE (1) DE3688025T2 (enrdf_load_stackoverflow)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE459918B (sv) * 1986-02-04 1989-08-21 Sundstrom Safety Ab Anordning foer veckning av pappersbanor och liknande
KR900004542B1 (ko) * 1986-07-18 1990-06-29 닛뽕 덴소오 가부시기 가이샤 거르개소자의 제조방법 및 장치
JPH0785769B2 (ja) * 1986-08-20 1995-09-20 日本電装株式会社 ▲ろ▼過エレメントの加熱成形方法
DE3936858A1 (de) * 1989-11-06 1991-05-08 Thermoplast Technik Ges Fuer K Pollen- und staubfilter, verfahren zu seiner herstellung und montagehilfe zur durchfuehrung des verfahrens
DE4018869C2 (de) * 1990-06-13 2000-11-30 Freudenberg Carl Fa Vorrichtung zum Auffächern eines mehrfach gefalteten Filtervlieses
DE4138890A1 (de) * 1991-11-27 1993-06-03 Mann & Hummel Filter Plattenfoermiges filterelement
US5375393A (en) * 1993-04-07 1994-12-27 Automated Solutions, Inc. Bag folding system
US5471817A (en) * 1993-04-07 1995-12-05 Automated Solutions Inc. Bag folding system
US5803892A (en) * 1994-06-17 1998-09-08 Petri Ag Process for folding an airbag
DE29522155U1 (de) * 1995-09-12 2000-04-20 Petri Ag Vorrichtung zur Faltung eines Gassackes für ein Airbagmodul
DE19546232B4 (de) 1995-09-22 2004-05-19 Takata-Petri Ag Vorrichtung zur Faltung eines Gassackes für ein Airbagmodul
BR9612463A (pt) 1996-01-29 1999-07-13 Petri Ag Saco de gás para um módulo de airbag e processo para a dobragem do saco a gás
BR9709278A (pt) 1996-05-28 1999-08-10 Petri Ag Airbag processo para o seu dobramento e dispositivo para a execução do processo
DE19702799C2 (de) 1996-05-28 2000-06-08 Petri Ag Gassack, Verfahren zu dessen Faltung und Vorrichtung zur Durchführung des Verfahrens
DE19625109C2 (de) 1996-06-17 1999-08-05 Petri Ag Gassackfaltung sowie Verfahren und Vorrichtung zur Gassackfaltung
AT412259B (de) * 2003-06-04 2004-12-27 Andritz Ag Maschf Verfahren zum herstellen eines sektorförmigen filterelements und filterelement
CN110753731B (zh) 2017-06-20 2022-10-28 富士胶片株式会社 光固化性油墨组合物及图像形成方法
JP6820429B2 (ja) 2017-08-29 2021-01-27 富士フイルム株式会社 インク組成物及びその製造方法、並びに画像形成方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984160A (en) * 1945-08-02 1961-05-16 United Shoe Machinery Corp Folding apparatus
US2531555A (en) * 1946-05-03 1950-11-28 United Shoe Machinery Corp Article-forming system
US2709950A (en) * 1948-11-04 1955-06-07 Gen Motors Corp Bellows folding machine
DE827582C (de) * 1948-11-04 1952-01-10 Gen Motors Corp Balgenfaltmaschine
GB1012534A (en) * 1964-03-03 1965-12-08 Flodins Industri Ab Method of and apparatus for the manufacture of aerosol filters
US4201119A (en) * 1978-09-08 1980-05-06 Mine Safety Appliances Company Filter pleating machine
US4430223A (en) * 1981-02-25 1984-02-07 Nippondenso Co., Ltd. Filter element for filtering fluid and method of producing same
US4659323A (en) * 1984-02-20 1987-04-21 Nippondenso Co., Ltd. Method for making axial-flow filters and apparatus therefor

Also Published As

Publication number Publication date
JPS6237143A (ja) 1987-02-18
CA1267019C (en) 1990-03-27
DE3688025T2 (de) 1993-06-24
CA1267019A (en) 1990-03-27
EP0212466A3 (en) 1989-03-01
DE3688025D1 (de) 1993-04-22
JPH034242B2 (enrdf_load_stackoverflow) 1991-01-22
EP0212466A2 (en) 1987-03-04
KR900004485B1 (ko) 1990-06-28
US4718884A (en) 1988-01-12
KR870001860A (ko) 1987-03-28

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